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Finding the Fourth Proportional to 11,783.70, 17,675.55 and 4,858.20

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Solution

The fourth proportional to 11,783.70, 17,675.55 and 4,858.20 is: 7,287.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,783.70 : 17,675.55 = 4,858.20 : x
  2. Step 2: Convert to fraction form
    11,783.70/17,675.55 = 4,858.20/x
  3. Step 3: Cross multiply
    11,783.70x = 17,675.55 × 4,858.20
  4. Step 4: Simplify right side
    11,783.70x = 85,871,357.01
  5. Step 5: Solve for x
    x = 85,871,357.01/11,783.70
  6. Step 6: Final answer
    x = 7,287.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.